003

Identify the exact program block causing the alarm by checking the CNC display screen for the line number and address code shown with the alarm message.

Review the flagged address data in the program. Check coordinate values against parameter 1004 (input increment) to verify maximum allowable range. For metric systems with 1µm increment, maximum is typically ±99999.999mm (8 digits).

Verify parameter 0 bit 0 (DPI) and parameter 1004 to confirm the input unit setting and calculate the maximum permissible coordinate value for your machine configuration.

Correct the program by reducing the number of digits or adjusting the value to within allowable limits. Alternatively, check if G10 programmable offset or coordinate system shift can be used to reduce the absolute coordinate magnitude.

Navigate to SYSTEM > PARAM and check parameter 3401 bit 0 (DPI). If set to 0, decimal point programming is disabled and all values are interpreted in minimum increment units.

Review the program block with the alarm. If decimal points are used but parameter 3401 bit 0 = 0, either enable decimal point input or reformat all coordinates without decimal points using minimum increment notation.

Changing parameter 3401 bit 0 affects how ALL programs are interpreted. Verify all existing programs are compatible before enabling or disabling this parameter.

If decimal point input is enabled but the program has incorrectly placed decimals (e.g., X1234567.89 instead of X12345.678), correct the decimal placement to reduce total digit count to 8 or fewer.

Locate the F or S address in the alarm block. Check parameter 1420 (maximum cutting feedrate) and parameter 3741 (maximum spindle speed) for the configured maximum values.

Verify the digit count of the F or S value. Feedrate typically allows up to 8 digits (including decimal if parameter 3402 bit 5 is enabled for feed decimal point). Spindle speed typically allows 5-6 digits depending on control series.

Reduce the F or S value to within allowable digit limits and ensure it does not exceed the maximum values set in parameters 1420 (feed) or 3741 (spindle). For very high feeds, verify parameter 1421 (rapid traverse rate) is appropriately set if using G00.

If using constant surface speed (G96), check that the calculated spindle speed does not exceed maximum allowable digits. Review parameter 3741 (max spindle speed) and consider setting appropriate clamp values in parameter 3743.